458 coNiD^. 



have taken it alive in ten fathoms in the Hebrides 

 (M 'Andrew and E. F.) ; it has also been taken in Loch 

 Fyne (Barlee), and at Oban (Jeffreys). It would appear 

 to be found on both sides of the Atlantic. We have 

 found it among- pleistocene fossils in Ireland. 



M. (Bela) septangularis, Montagu. 



Remarkably solid, of an uniform lighter or darker livid flesh 

 colour ; whorls with seven broad continuous longitudinal ribs, 

 otherwise smooth : outer lip thickened. 



Plate CXII. fig. 6, 7, and (Animal) Plate T. T. fig. 3. 



Murex costatus, Pultenev, Hutching, Hist. Dorset, p. 43. — Rack. Dorset 



Catalog, p. 4G. 



„ sepla7igularis, Mont. Test. Brit. p. 268, pi. 9, f. 5 ; Suppl. p. 115. — 



Maton and Rack. Trans. Linn. Soc. vol.viii. p. 144. 



— TuRT. Conch. Diction, p. 92. — Dillw. Recent Shells, 



vol. ii. p. 744 Wood, Index Testaceolog. pi. 27, 



f. 132. — Clark, Annals Nat. Hist. 2nd ser. vol. vii. 

 p. 113. 

 „ septemangulatiis, Donov. Brit. Shells, vol. v, pi. 179, f. 4. 

 Ftisus septangtdaris, Fleming, Brit. Animals, p. 350. — Brown, Illust. Conch, 



G. B. p. 7, pi. 5, f. 11. 

 Pleurotoma „ Blainv. Faune Franf. Moll. pi. 4, f. 4. — Brit. Marine 



Conch, p. 196. — Kiener, Coq. Vivant. Pleurot. pi. 26, 

 f. 3. — Philippi, Moll. Sicil. vol. ii. p. 169. — Reeve, 

 Conch. Iconica, vol. i. Pleurot. pi. 25, f. 322. 

 „ heptagona, Scacchi, Notiz. p. 42, pi. 1, f. 9; Cat. p. 11 (teste 



Philippi). 



The peculiar contour of this interesting species renders 

 it easily recognisable. It is very solid, opaque, more or 

 less shining, and of a lighter or darker livid flesh- colour, 

 that is not variegated, but merely becomes paler on the 

 ribs, so that in the more pallid examples they are white or 

 nearly so ; sometimes, too, there is a very obscure and un- 

 defined whitish band beneath the sutures. The shape is 

 turreted above, bluntly and abbreviatedly semifusiform 



